Synergistic effect of residual stress and hydrogen trapping on pitting corrosion in 2205 duplex stainless steel welded joints

Key Points

• Pitting corrosion was significantly elevated due to the interplay of residual stress and hydrogen trapping in welded joints.
• The study quantified corrosion levels, showing a notable increase in pitting density associated with these factors.
• Observational analysis approached the problem by assessing the microstructural changes in duplex stainless steel under stress and hydrogen influence.
• These findings highlight the need for further investigations into mitigation strategies for welded stainless steel applications.